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Note 23 - Subsequent Events (Details Textual) - $ / shares
 12 Months Ended
Mar. 15, 2023
Jan. 12, 2023
Dec. 14, 2022
Oct. 13, 2022
Sep. 14, 2022
Jul. 14, 2022
Jun. 15, 2022
Apr. 14, 2022
Mar. 16, 2022
Jan. 13, 2022
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Common Stock, Dividends, Per Share, Declared (in dollars per share)       $ 0.32   $ 0.32   $ 0.31   $ 0.31      
Common Stock, Dividends, Per Share, Cash Paid (in dollars per share)     $ 0.32   $ 0.32   $ 0.31   $ 0.31   $ 1.26 $ 1.18 $ 1.12
Forecast [Member]                          
Common Stock, Dividends, Per Share, Cash Paid (in dollars per share) $ 0.33                        
Subsequent Event [Member]                          
Common Stock, Dividends, Per Share, Declared (in dollars per share)   $ 0.33